Yarn control apparatus

ABSTRACT

Device draws yarn end by suction into receiver and expels same by fluid pressure, or releases same by cutting action, for transfer to bobbin, or the like.

United States Patent Slavik [451 July 25, 1972 [54] YARN CONTROL APPARATUS [7 2] Inventor: Valter Slavik, Wattwil, Switzerland [56] Reerenm Cited 13 Assignee: Heberlein & Co. AG, Wattwil, Switzerland UNITED STATES PATENTS March 2 Kififel' et [21 Appl. No.: 120,257 Primary Examiner-Robert C. Riordon Assistant Examiner-Michael Koczo, Jr.

i t 't l 30] Foreign Application Priority Data Anorney Ward, McE hdnnon Brooks 8L Fl Zpa rlck March 6, 1970 Switzerland ..3304/70 [5 7] ABSTRACT [52] US. Cl ..30/ 131, 30/133, 83/100, Device draws yam end by Suction into receiver and expels 226/97 same by fluid pressure, or releases same by cutting action, for [51 Int. Cl. ..B26b 13/00, B6511 54/02 transfer to bobbin, or h ik [58] FieldofSearch ..30/l33,l73,l23 R,228,l3l;

5 Claim, 6 Drawing Figures PATENTEB JUL25 I972 SHEET 1 OF 2 PATENTEUJULZSIBIZ SHE 2 OF 2 3573 579 INVENTOR. MM 2-0? Sun/K YARN CONTROL APPARATUS The present invention relates to an apparatus for controlling one or more yarn ends, and more particularly to an apparatus for seizing at least one yarn end and transferring the same to a wind-up bobbin, or the like, by a jet of fluid medium under pressure.

In a known apparatus, the yarn is sucked through a tube and transferred to the bobbin by hand. This apparatus, however, is

' only suitable for use in connection with yarns advancing only at relatively low speeds; or, if at higher delivery speeds, calls for very highly skilled operators.

It is the purpose of the present invention to construct an apparatus capable of overcoming the foregoing difirculties and disadvantages. Thus, I contribute a yarn control apparatus of the class described by which I am able to seize at least one yarn and to transfer the same to a wind-up bobbin, even though the yarn advances at delivery speeds of up to l,000 m/min and more. Furthermore, no special skills are required to operate my apparatus.

According to the present invention, this apparatus is characterized in that it comprises a body with alongitudinal through-bore, a tube, part of which is rigidly fixed in the body so as to communicate with the bore, a jet with feeding means for the medium under pressure, said jet being situated at the terminal part of the tube, and a slide situated opposite the end of the tube and the jet, which can be shifted with respect to the axis of the bore in order to shut off the same, said slide cooperating with a knife for cutting the yarn. Normally, with the slide in position to maintain the bore open, fluid medium,

such as air under pressure, acting through the jet, will aspirate outside air through the tube and this enables yarns to be drawn through the tube into the bore. When the slide is shifted to shut the bore, the yarn is cut and the fluid medium is diverted to blow out through the tube carrying the yarn end with it.

There has thus been outlined rather broadly the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject of the claims appended hereeto. Those Skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures for carrying out the several purposes of the invention. It is important, therefore, that the claims be regarded as including such equivalent construction as do not depart from the spirit and scope of the invention. A specific embodiment of the invention has been chosen for purposes of illustration and description, and is shown in the accompanying drawings, forming a part of the specification, wherein:

FIG. 1 is a schematic plan view of the apparatus according to my invention;

FIGS 2 and 3 are longitudinal sectional views through the body of the apparatus of FIG. 1 illustrating different positions of the slide; and

FIGS. 4, 5 and 6 illustrate ways of transferring yarn to different kinds of wind-up devices by the use of the present apparatus. Referring now to the drawings, there is shown in FIG. 1 a body 1 with a tube 2 extending therefrom; and a vertically mountable slide 3, as well as a connection tube 4 depending therefrom, a pistol grip 5 connected to the lower end of the tube 4, and a porous receiving bag 6. The pistol grip 5 is, at its lower end, connected with a feed pipe 7 leading to a container for the fluid medium under pressure. In the pistol grip 5, a valve (not shown) is provided which can be opened or closed by means of a trigger 8.

As shown in FIG. 2, the medium under pressure enters into a cylindrical chamber 9 in the body 1 surrounding the inner end of tube 2 and then, through the jet formed of a conical ring section 10 between tube 2 and an extension of the chamber 9, into a connecting bore 11. When the slide 3 is in the raised or open position, as shown, the medium under pressure escapes through the bore 11 in the direction of the arrows, whereby it aspirates ambient air through the tube 2 so that a yarn may be drawn by suction into the bore ll and thence into a receiving bag 6 into which the bore communicates. If, thereupon, the slide 3 is actuated by depressing the terminal part 3 protruding from the body 1, by overcoming the force of a spring 12 (FIG. 3),-which normally maintains the slide 3 in open position, the bore 11 is closed so that the medium under pressure escaping through the jet 10 is deviated in direction of the arrows (FIG. 3), and escapes through the tube 2. During the closing operation, the slide 3 cooperates with the knife 14, the end of which, bearing the cutting edge 14', is pressed against the moving slide 3 by a spring 13 so that the yarn in the bore 11 is cut off, and the yarn piece in the tube 2 is exhausted from the same by the diverted medium under pressure, the other piece being caught in the bag 6. A pin and slot arrangement 25 in the body 1 and knife blade 14 serves to allow pivotal movement of the blade while retaining it out of the path of fluid medium. If the depressed slide 3 is released, it moves back into its original position under the influence of the spring 12, and the bore 11 is opened again.

Turning now to FIG. 4, I shown the transfer of the yarn l6 seized, while the slide 3 is open, by means of the tube 2, e.g., from the delivery mechanism of a yarn texturing machine, for example, to a wind-up bobbin 17 which, on one side, carries a roughened surface portion 18. The yarn 16 is cut by depressing the slide 3 and is projected by the pressure medium exhausting from tube 2 when the slide closes bore 11, onto the roughened portion 18 of the rotating wind-up bobbin 17 in direction of the arrow. The end of the yarn, now adhering to the surface 18, is now taken up by the rotating wind-'up bobbin 17.

FIG. 5 shows the transfer of the yarn 16 to a wind-up bobbin 17' with a smooth surface onto which a projection of the yarn cannot be effected. The yarn seized while the slide 3 is open is then wound once around the wind-up bobbin l7 and the drawing-off is continued. After the wind-up bobbin 17' has started to rotate, the compressed air supply is shut off by depression of the trigger 8 and the yarn is cut by depressing the slide 3. The short portion of yarn which has remained in the metal tube 2 is drawn out and wound onto the wind-up bobbin 17'.

According to FIG. 6, it is as well possible to transfer the yarn to a wind-up bobbin 17", the whole surface of which is covered by a rough coating 18', without projecting the yarn. The yarn seized while the slide 3 is open is led around the wind-up bobbin l7" and drawn off further. After the wind-up bobbin has started to rotate, the compressed air supply is again shut off and the yarn cut by depressing the slide 3.

From the foregoing description, it will be seen that I have contributed a novel yarn-handling apparatus capable of seizing and projecting yarns advancing at relatively high speed and without the need of highly skilled operators. It will also be seen that, instead of one single yarn, two or more yarns may be sucked in together and transferred to the wind-up bobbin.

I believe that construction and operation of my novel apparatus will now be understood, and that the advantages of my contribution will be fully appreciated by those persons skilled in the art.

I claim:

1. Apparatus of the class described] comprising a body l) with a longitudinal through-bore (11), a tube (2) supported by said body and communicating with said bore, a jet (10) formed adjacent the point of communication of said bore to direct fluid medium to said bore and aspirate ambient air into said tube and bore, means for supplying fluid medium under pressure to said jet, and a slide (3) situated opposite the end of the tube and the jet, said slide being shiftable vertically with respect to the axis of the bore (11) in order to shut off said bore, said slide cooperating with a knife (14) for cutting a yarn extending through said tube into said bore.

2. Apparatus according to claim 1, characterized in that the bore (11) is enlarged in the zone in which a part of the tube (2) is placed to form a clylindrical chamber (9), surrounding slide (3) presents a terminal part (3') protruding from the body (1) depressable by hand against the force of spring 12) in order to close the bore l l 5. Apparatus according to claim L characterized in that a spring (13) presses the end of the knife (14) carrying the cutting edge 14') against the slide (3). 

1. Apparatus of the class described comprising a body (1) with a longitudinal through-bore (11), a tube (2) supported by said body and communicating with said bore, a jet (10) formed adjacent the point of communication of said bore to direct fluid medium to said bore and aspirate ambient air into said tube and bore, means for supplying fluid medium under pressure to said jet, and a slide (3) situated opposite the end of the tube and the jet, said slide being shiftable vertically with respect to the axis of the bore (11) in order to shut off said bore, said slide cooperating with a knife (14) for cutting a yarn extending through said tube into said bore.
 2. Apparatus according to claim 1, characterized in that the bore (11) is enlarged in the zone in which a part of the tube (2) is placed to form a clylindrical chamber (9), surrounding said tube, for receiving the medium under pressure and in that the jet (10) takes the form of a conical section connected with chamber (9) and enclosing the end of the tube (2).
 3. Apparatus according to claim 1, characterized in that a spring (12) normally urges the slide (3) into a position to maintain the bore (11) open.
 4. Apparatus according to claim 3, characterized in that the slide (3) presents a terminal part (3'') protruding from the body (1) depressable by hand against the force of spring (12) in order to close the bore (11).
 5. Apparatus according to claim 1, characterized in that a spring (13) presses the end of the knife (14) carrying the cutting edge (14'') against the slide (3). 